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The drawing shows two long, straight wires that are suspended from a ceiling. The mass per unit length of each wire is 0.051kg/m. Each of the four strings suspending the wires has a length of 1.2m. When the wires carry identical currents in opposite directions, the angle among the strings holding the two wires is 15°. What is the current in all wire?
The new blade on my table saw has a radius of 15.0 cm. My table saw has a maximum speed of 3750 rpm. If it takes 2.50 seconds to get up to this final speed, what is the tangential velocity of the tip of the saw blade,
The acceleration of gravity is 9.81 m/s2 . Assuming that air resistance is simply a constant 93 N force on the person during the fall, evaluate the person’s velocity just before hitting the net.
A sealed tube (0.5 L) in volume confines two moles of an ideal gas at a pressure of 2 atm. What is the average kinetic energy of a gas molecule
Two point charges are on the y-axis. A 2.0 µC charge is placed at y =1.35 centimeter, Determine the total electric potential at the point having coordinates (1.50 cm, 0)
The output voltage of an ideal transformer connected to 240 V a.c mains is 24 volt. Now We have to calculate current in primary coil
A pendulum is made by letting a 2.0-kg object swing at the end of a string that has length of 2.0 m. What is the speed of the object at the lowest point in its swing
A centrifuge is a device in which a small container of material is rotated at a high speed on a circular path. How many revolutions per minute is the sample making
A circular coil has a 20.0 cmradius and consists of 30.0 closelywound turns of wire. If no current is in the coil, what magnetic flux links its turns
At an amusement park there is a ride in which cylindrically shaped chambers spin around a central axis, What is the radius of a chamber
A binary star in the constellation Orion has an angular separation between the stars of 10^-5radians. if lambda=500nm, what is the smallest aperture (diameter) telescope
A package, mass M=2kg is dropped vertically from a height h=0.5m onto a horizontal conveyor belt which is moving at a uniform speed v= 2m/s. calculate the thermal engery between belt and box
A tank of compressed air of volume 1.0 m3 is pressurized to 40.0 atm at T = 273 K. A valve is opened and air is released until the pressure in the tank is 33.0 atm. How many air molecules were released?
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